Beijing is one of the in the world today. A、busiest city B、busy cities C、busiest cities
A: Would you like me to show you around the Bund? B: ________
Many people are wondering ________.
I’ll invite you to my new flat as soon as I finish ________ it.
Listen! The teachers ________ a discussion in the meeting room at the moment.
Michael promised he ________ my e-mail as soon as he went back home.